n | a(n) |
---|---|
3 | 1 |
4 | 4 |
5 | 19 |
6 | 107 |
7 | 702 |
8 | 5274 |
9 | 44712 |
10 | 422568 |
11 | 4407120 |
12 | 50292720 |
13 | 623471040 |
14 | 8344624320 |
15 | 119938250880 |
16 | 1842662908800 |
17 | 30136443724800 |
18 | 522780938265600 |
19 | 9587900602828800 |
20 | 185371298306611200 |
21 | 3768248516336640000 |
22 | 80349669847157760000 |
23 | 1793238207723325440000 |
24 | 41806479141525288960000 |
[1,4,19,107,702,5274,44712,422568,4407120, 50292720,623471040,8344624320,119938250880, 1842662908800,30136443724800,522780938265600, 9587900602828800,185371298306611200, 3768248516336640000,80349669847157760000, 1793238207723325440000,41806479141525288960000] |